Virtual L2TP/VPN tunnel network and spanning tree-based method for discovery of L2TP/VPN tunnels and other layer-2 services

a virtual l2tp/vpn tunnel and tunnel network technology, applied in data switching networks, multiplex communication, digital transmission, etc., can solve the problems of increased response time and/or lower reliability of vpns over public networks

Inactive Publication Date: 2004-07-20
GC PIVOTAL LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, utilizing VPNs over public networks typically comes at a cost of greater response time and / or lower reliability.

Method used

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  • Virtual L2TP/VPN tunnel network and spanning tree-based method for discovery of L2TP/VPN tunnels and other layer-2 services
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  • Virtual L2TP/VPN tunnel network and spanning tree-based method for discovery of L2TP/VPN tunnels and other layer-2 services

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Embodiment Construction

A system and method for automatic discovery of VPN tunnels, such as L2TP or IP Sec tunnels, and other layer-2 services using a method based on the spanning tree protocol are disclosed. The following description is presented to enable any person skilled in the art to make and use the invention. Descriptions of specific embodiments and applications are provided only as examples and various modifications will be readily apparent to those skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed herein. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure...

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Abstract

A virtual L2TP/VPN tunnel network as well as a system and method for automatic discovery of VPN tunnels, such as L2TP tunnels, and other layer-2 services using a method such as one based on the spanning tree protocol are disclosed. The method for automatic discovery of layer-2 services across a network of layer-2 devices generally comprises transmitting an advertisement message on each tunnel of each layer-2 device, the advertisement message containing information for generating a spanning tree based on spanning tree algorithm, receiving advertisement message on the tunnels of each layer-2 device, and processing the received advertisement messages to generate a spanning tree topology of the network of layer-2 devices whereby each layer-2 device in the network automatically discovers layer-2 services of other layer-2 devices on the network. The transmitting is preferably repeated at predetermined configurable intervals.

Description

1. Field of the InventionThe present invention relates generally to a virtual L2TP / VPN tunnel network and a system and method for automatic discovery of VPN tunnels and other layer-2 services. More specifically, a virtual L2TP / VPN tunnel network as well as a system and method for automatic discovery of VPN tunnels, such as L2TP tunnels, and other layer-2 services using a method such as one based on the spanning tree protocol are disclosed.2. Description of Related ArtVirtual private network (VPN) generally refers to a private network having a secure encrypted connection configured across a public network. VPN allows organizations such as corporations to utilize a public network as its own virtual private communications tool. VPNs appear as private national or international networks to the customer but physically share backbone trunks with other customers.Implementing a VPN provides cost efficiency advantages by avoiding the expense of setting up a dedicated secure network while prov...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04L29/06H04L12/46
CPCH04L12/4641H04L63/0272H04L63/0428
Inventor RAJAKARUNANAYAKE, YASANTHA N.
Owner GC PIVOTAL LLC
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